SU375383A1 - DEVICE FOR CONDUCTING NABRYZG-CONCRETE WORKS - Google Patents

Description

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This invention relates to the erection of a spray-mount in the mining industry.

There are known devices for conducting concrete work, including hermetically closed feeders with a metering device, a material nipple, an electric drive, a pneumatic conveying line, and a hose with a nozzle.

In such a device, the distance over which the dry mixture is transported is not enough, which, when operating in long workings in mines, entails frequent movements of the installation with auxiliary equipment.

In the proposed device, the pneumatic conveyor at the output end is provided with a chamber with a variable cross section.

Such an embodiment allows an increase in the transport length of dry materials.

The drawing shows the proposed device, a longitudinal section.

The device consists of a chamber machine 1 (first) with a neck 2, into which the dry mixture is loaded, a valve 3 for sealing the chamber, a dispenser 4 located in the lower part of the body of the chamber machine, a blown window 5 through which compressed air is supplied to blow the mixture from the dispenser blades material pipe 6, placed under the blown window, fitting 7 installed at the end of the material pipe through which air is supplied to transport the dry mix, transport pneumatic line 8 connected to the material pipe machine 9 (second, without dispenser) with a throat 10, hermetically connected to the transport pneumatic line, a tapered part // of the machine, a material pipe 12, a material hose 13 connected to the material pipe 12, a wetting chamber 14, where the dry mixture is mixed, a nozzle 15, by means of which a shut off mixture is applied to the surface of the working, a pressure gauge 16 indicating the pressure in

transport pneumohighway.

The device works as follows. The dry mix to be transported is loaded into the chamber machine / through

the throat 2 is sealed for pressure operation by the valve 3. Then, through the blown window 5, compressed air is supplied to blow out the dry mixture from the blades of the dispenser 4 and through fitting 7 to transfer the dry mixture.

After the supply of compressed air, the metering drive is activated, which with its blades captures the dry mixture and leads to the blow window 5, where it is blown off into the material outlet 6. From the material outlet

the mixture enters the transport pneumatic mainline, where it is picked up by compressed air and moves at the optimum speed (20-25 m / s to the machine 9. The flow of the dry mixture, the passage through the second chamber machine 5, its conical part 11, increases the speed to the optimal 80-- 120 m / s At an optimal rate, the flow of the dry mixture passes through the material nozzle 12, the material hose 13. In the wetting chamber 14, the dry mixture is closed and applied with the help of the nozzle 15 to the working surface.

Subject invention

A device for spraying, including hermetically closed feeders with a metering device, a material connection, an electric drive, a pneumatic conveying line and a hose with a nozzle, characterized in that, in order to increase the distance of dry materials transportation, the pneumatic "sports line" at the output end equipped with a camera with a variable cross section.

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